THERMAL SCIENCE

International Scientific Journal

Mingyu Wang

,

Jing Zhao

,

Feihong Guo

,

Lingli Zhu

,

Dekui Shen

,

Xiaoxiang Jiang

NUMERICAL SIMULATION ON THE EMISSION OF NOX FROM THE COMBUSTION OF NATURAL GAS IN THE SIDEWALL BURNER

ABSTRACT
The NOx produced from industrial facilities is a serious environmental problem in China. In this work, the NOx emission from the combustion of natural gas in the sidewall burner was investigated by using CFD method. To achieve the low NOx emission, the sidewall burner structure was optimized involving the width of the primary premixed gas outlet, the secondary fuel gas nozzles number and angular spacing. The mixing rate of fuel gas and air could be improved by increasing the width of primary premixed gas outlet, and the lowest NOx emission of 32.8 ppm was achieved at the width of 8 mm. The NOx emission was remarkably reduced with the increasing of nozzles number, where 28.33 ppm of NOx emission and 357.35 ppm of CO were obtained at four nozzles. The combustion performance and NOx emission was improved as well as NOx emission was reduced at the angular spacing of 55°, compared to that of 30°, 35°, 40°, 45°, 50°, and 60°.
KEYWORDS
NOx, Combustion performance, numerical simulation, Burner structure, Fuel gas
PAPER SUBMITTED: 2020-09-16
PAPER REVISED: 2020-12-01
PAPER ACCEPTED: 2020-12-03
PUBLISHED ONLINE: 2021-02-06
DOI REFERENCE: https://doi.org/10.2298/TSCI200916061W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 1, PAGES [247 - 258]
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Numerical simulation on the emission of NOx from the combustion of natural gas in the sidewall burner

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence